JPH11196449A - Antenna control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a digital transmitter receiver to perform interphone connection between two portable terminals, extension line connection, repeating connection between a portable terminal and an external base station and external connection to a telephone line without an exchange intervened. SOLUTION: A transmitter 111 and a receiver 112 are connected to an indoor antenna antenna 1a by way of cables 31a and 32a respectively and are also connected to a telephone line by a control part 113 by way of a line connection part 114. The indoor 1a has an amplifier 2a amplify an outgoing signal, has a branching device 4a branch its output, has a synthesizer 6a synthesize the other one and has an antenna 7a emitting the output. A small power signal from another portable terminal 103 is received by the antenna 7a, is first amplified by an amplifier 3a by way of a synthesizer 6a and a branching device 5a, and is received by the receiver 112 of an antenna control device 100 by way of the cable 32a. The transmitter 111 and the receiver 112 are imparted a repeater function between time division slots and a change-over function between an outdoor antenna 1a and the outdoor antenna in accordance with the slots.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0101]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless portable terminal (hereinafter, referred to as a portable terminal) operating in a microcell in an environment such as an office, which is installed in an office or the like and interferes with other electronic devices. , So that the transmission output from the mobile terminal can be used with as low as possible,
Moreover, in order to realize an extension connection between portable terminals, a relay connection between a portable terminal and an external base station, or an external line connection with a telephone line, etc., without using a special switching device inside or outside, in an inexpensive manner. Related to an antenna control device.

[0092]

2. Description of the Related Art FIG. 11 shows the configuration of a conventional base station, exchange, and antenna, where (101) is a base station, (102) is a base station antenna, and (103a).
(103b) is a portable terminal, (104) is an exchange or a telephone office, (105a) and (105b) are connection terminals of a telephone line, (106a) and (106b) are telephone lines, and (107).
a) (107b) is a connection terminal of the exchange (104), (1)
10) is a transceiver, (111) is a transmitter, (112) is a receiver, (121) is a baseband IC, (122) is a synthesizer, (113) is a control unit, (114) is a line connection unit, 139) is an antenna connection terminal, (140) is a transmission / reception switch, and (141a) and (141b) are audio codecs. A base station (101) for configuring a conventional microcell is usually provided with a base station antenna (102) at one place, and therefore, in order to cover a wide range, the base station (101) and a mobile terminal are required. Both (103) had to have a relatively large transmission output, or a number of base stations (101) had to be installed. Moreover, 2
In order to establish a call connection between the portable terminals (103a) and (103b), the voice output modulated and demodulated by the transceiver (110) is transmitted to the line connection unit (114) and the telephone line (106).
a) The exchange or the telephone office (10) through (106b).
There was a need for a method such as connecting to 4) and receiving an exchange connection, or providing a special exchange device at the voice signal stage inside.

[0093]

In a conventional base station for constituting a microcell, an antenna for the base station is installed at one place, so that in order to cover a wide range, both the base station and the portable terminal are required. A relatively large transmission output is required, and in order to establish a call connection between two portable terminals, the mobile terminal is connected to an exchange or a telephone office via a telephone line to receive line switching, or an internal switching device. It was necessary to provide. Also, when the mobile terminal has a relatively large transmission output, in an environment such as a hospital where many precision electronic devices are used, malfunctions of the electronic devices often occur, and there is a danger to human life. It has been reported. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. An extension connection between two portable terminals, or a connection between a portable terminal and an external base station, without using an exchange or a telephone office. Relay connection between mobile terminals and external lines between mobile terminals and telephone lines.Also, a sufficient service area can be secured with relatively small transmission output for both base stations and mobile terminals. It is an object of the present invention to enable a mobile terminal to be used without causing a malfunction or the like of an electronic device even in an environment where the electronic device is used.

[0093]

According to the present invention, there is provided a transmitter / receiver having a relay means having a fixed or minimum exchange function between one or a plurality thereof and a selection means for selecting between an indoor antenna and an outdoor antenna. Means, wherein the transceiver is an extension connection trunk for connection between mobile terminals,
A relay connection trunk for connecting a mobile terminal to an external base station, or an external connection trunk for connecting an external line between a mobile terminal and a telephone line, etc., while an indoor antenna has an amplifier and a switch inside. And a plurality of antenna elements and the like, which can be connected in series, so that the radiated power from the indoor antenna and the radiated power from the portable terminal can be kept as small as possible.

[0056]

In the present invention, various connecting means using a plurality of digital transceivers constituting a microcell can be connected to two portable terminals without passing through an exchange, a telephone office or an internal special exchange. An indoor antenna that has an internal amplifier, a branching device, and an antenna element that enables an extension connection between mobile terminals, a relay connection between a mobile terminal and an external base station, or an external line connection between a mobile terminal and a telephone line, etc. It works to keep the radiated power from the mobile phone and the radiated power from the portable terminal as small as possible.

[0086]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the antenna control device according to the present invention will be described below. In FIG. 1, (1a, 1b) is an indoor antenna, (2a, 2b) is a downstream amplifier,
(3a, 3b) is an upstream amplifier, (4a, 4b) is a downstream branch, (5a, 5b) is an upstream branch, and (6a, 6b) combines the upstream and downstream directions. A splitter for providing a common output terminal, (7a, 7b) is an antenna element, (21a, 21b) and (23a, 23
b) is a coaxial cable connection terminal in the down direction, (22a, 2
(2b) and (24a, 24b) are connection terminals for upstream coaxial cable, (31a, 31b, 31c) are coaxial cables for downstream connection, (32a, 32b, 32c) are coaxial cables for upward connection, ( 100) is an antenna control device, (103a) and (103b) are portable terminals, (1)
05) is a telephone line connection terminal, (106) is a telephone line,
(111) is a digital transmitter, (112) is a digital receiver, (113) is a control unit, (114) is a line connection unit, (115) is a downstream coaxial cable connection terminal, and (116). Denotes a coaxial cable connection terminal in the upward direction.

In FIG. 1, the antenna control device (10
The output power of the transmitter (111) of (0) is a weak value (0.4) at the downstream coaxial cable connection terminal (115).
mW) and the coaxial cable (31a)
Is connected to the indoor antenna (1a) via the. The receiver (112) of the antenna control device (100) has high sensitivity and is connected to the indoor antenna (1a) via the coaxial cable (32a). The transmitter (111) and the receiver (1
12) is controlled by the control unit (113), and is connected to the telephone line via the line connection unit (114). In the indoor antenna (1a), the amplifier (2a) increases the high frequency signal in the down direction, the output of the amplifier is split by the splitter (4a), and one of the split high frequency signals is synthesized by the splitter (6a), Radiate from the antenna element (7a). The output of the antenna controller (101) from the transmitter (111) is relatively small, and the gain of the amplifier (2a) is reduced by the coaxial cable (31).
a), the output power to the next stage and the power radiated from the antenna element (7a) can be kept relatively small if the loss is set equal to the sum of the losses of the branching devices (4a) and (6a). On the other hand, the mobile terminal (103a) or (103)
The high-frequency signal of relatively low power radiated from b) is first received by the antenna element (7a) and is turned on by the splitter (6a).
After passing through the branching device (5a), the signal is amplified by the amplifier (3a) and received by the receiver (112) of the antenna control device (100) via the coaxial cable (32a). Since the loss of the coaxial cable (32a) is compensated by the amplifier (3a), for example, a high-frequency signal of relatively small power radiated from the portable terminal (103a) can be received with high sensitivity. Similarly, in the subsequent indoor antenna (1b) as well, the high-frequency signal from the previous stage is relatively small, so that the output power to the next stage and the power radiated from the radiating element (7b) are also relatively small. The high-frequency signal of relatively small power radiated from the terminal (103a) is amplified by the amplifier (4).
b) and also amplified by the amplifier (4a) in the preceding stage, and the receiver (11) of the antenna control device (100).
In 2), reception can be performed with high sensitivity. On the other hand, from the transmitter (111) of the antenna control device (100), the portable terminals (103a) and (103a) use a relatively small transmission output.
The control signal for instructing b) is transmitted, and when the control signal is received, the portable terminals (103a) and (103b) can transmit only a relatively small transmission output, thereby preventing interference with peripheral electronic devices and the like. It can be removed. Further, if a plurality of transmitters (111) are provided in the antenna control device (100) and one of the transmitters (111) constantly transmits a control channel of a mobile phone system other than its own mobile phone system, other mobile phones (111) can be used. Transmission from the portable terminal of the telephone system can be restricted or prohibited.

FIG. 2 shows another system diagram of the antenna control device of the present invention. In FIG. 2, (117)
Is a switch for switching between the transmitter (111) and the receiver (112), (118) (25a) (26a) (25a)
(26b) is a common coaxial cable connection terminal in the up and down directions, (10a) (11a) (10b) (1
1b) has the same configuration as FIG. 1 except that the branching devices (33a), (33b), and (33c) are coaxial cables. Switch (117) and branching device (10a) (11a) (10
b) and (11b) are for connecting coaxial cables (33a), (33b), and (33c) that are common in the upstream and downstream directions. If the sum of the isolation of the splitters (10a) and (11a) is made larger than the sum of the amplification of the amplifiers (2a) and (2b) and the sum of the losses of the splitters (4a) and (4b), the oscillation will not occur and the oscillation will be stable. Operate.

FIG. 3 is a block diagram showing an embodiment of the antenna control device of the present invention. (100) is an antenna control device, (109) is an outdoor antenna, (108) is an external base station, and (110) is a digital system (in FIG. 3, as an example, a time division multiplexing / time division simultaneous transmission / reception system). ), (111) is a transmitter, (112) is a receiver, (11)
3) is a control unit, (117) is a branching device, (121) is a baseband IC, (127) and (128) are indoor antenna connection terminals (115) and (116) and an outdoor antenna (10).
9) A switch for switching between (125) and (1)
26) (129) is a band-pass filter, (115) is a connection terminal of the coaxial cable (31a) in the down direction, (11)
6) is a connection terminal of the upward coaxial cable (32a);
(103a) and (103b) are portable terminals. First, a notification signal is transmitted from the transceiver (110) through the control channel. The notification signal includes the mobile terminal (1
03a) and (103b) can include information for regulating the transmission output. In this state, the mobile terminal (103
When a) calls another mobile terminal (103b), the return relay is performed in the transceiver (110), and the indoor antenna side is selected by the switches (127) and (128) in any slot, and the mobile terminal (103) is selected. 103b) is transmitted to another portable terminal (103b) via a coaxial cable (31a) in the down direction, and when the other portable terminal (103b) responds, the portable terminal (1) is called.
03a) and the extension connection state. When either side ends the call, the line is disconnected and the system returns to the standby state. If the mobile terminal (103a) calls the external base station (108), the switches (127) and (128) are switched between the indoor antenna side and the outdoor antenna (109), for example, the switch (127). Is a mode in which the switch (128) alternately switches between the fifth and seventh slots and the first and third slots, and transmits a call signal to the external base station (108) via the outdoor antenna (109). When the other party responds, the mobile terminal (103a) and the other party are placed in a relay connection state. When either side ends the call, the line is disconnected and the system returns to the standby state.

FIG. 4 is a block diagram showing another embodiment of the antenna control device of the present invention. (100) is an antenna control device, (110a) and (110b) are digital type transceivers (in FIG. 4, as an example, a time division multiplexing / time division simultaneous transmission / reception system), and (111a) and (111b) are transmissions. (112a) and (112b) are receivers, (121a)
(121b) is a baseband IC, (122a) (12
2b) is a synthesizer, (113a) and (113b) are control units, (123) is a synthesizer, (124) is a branching device, and (1)
25) (126) is a band-pass filter, (115) is a transmission output terminal, (116) is a reception input terminal, (31a)
Is a downward coaxial cable, (32a) is an upward coaxial cable, (103a) and (103b) are portable terminals,
(151) is a connection terminal of the common line control line, (152)
Is a connection point of a PCM highway or the like. Transceiver (110
a) (110b) has, for example, eight slots in time division. In the first slot, the mobile terminal (103
a) transmitting the high frequency signal in the upstream direction from the receiver (112a);
, And is detected by the baseband IC (121a) and converted into a digital signal.
The signal is modulated by the base hand IC (121a) and transmitted by the transmitter (111).
The signal is added to a) and becomes a high-frequency signal in the fifth slot and transmitted to the portable terminal (103b). Conversely, a receiver (112a) receives an upstream high-frequency signal from the portable terminal (103b) in the third slot,
When the digital signal is detected in (121a) and converted into a digital signal, the digital signal is left as it is and the baseband IC (121a)
The signal is modulated in a), added to the transmitter (111a), converted into a high-frequency signal in the seventh slot, and transmitted to the portable terminal (103a). If the time division is at least two slots on the transmission side and two slots on the reception side, bidirectional relay is possible. The synthesizer (122a) is for setting the frequencies of the transmitter (111a) and the receiver (112a). The synthesizer (123) is connected to the transmitters (111a) (111).
b) and combines the combined outputs with the downstream coaxial cable (31) via the band-pass filter (125).
Connect to a). A high-frequency signal from the upstream coaxial cable (32a) is split by a splitter (124) via a band-pass filter (126), and is received by a receiver (112a).
(112b). First, the transceiver (110
From a), a broadcast signal is transmitted through the control channel. This notification signal can include information that regulates the transmission output of the mobile terminals (103a) and (103b). Next, when the transceiver (110a) enters the relay state, a notification signal is transmitted from the transceiver (110b) through the control channel. In this state, the mobile terminal (103
If a) makes a call, if another mobile terminal (10
In the case of an interphone call for calling 3b), a return call is performed in the transceiver (110a), and a call signal for calling another mobile terminal (103b) is transmitted via a downstream coaxial cable (31a). Other mobile terminals (103
When b) responds, the mobile terminal (103a) is connected to the intercom or the extension. Next, when the transceiver (110a) enters the relay state, the transceiver (110a)
A notification signal is transmitted from b) through the control channel.
When either side ends the call, the line is disconnected and the system returns to the standby state. The control units (113a) and (113b) are connected by a connection terminal (151) of the common line control line, and are used to transfer signals for synchronous operation of the transceivers (110a) and (110b) or mutual control. It is also possible to configure an information network using a common line control system or an Ethernet system. Baseband IC (121a)
(121b) is a connection terminal (15) of the PCM highway.
2), and mutually transmit and receive the minimum number of baseband signals or digital signals.

FIG. 5 is a block diagram showing another embodiment of the antenna control apparatus of the present invention. Control unit (113a) (1
13b) is a main control unit (15) via a bus line (153).
5) and the transceivers (110a) (110)
b) are connected by connection terminals (153a) and (153b) and perform mutual synchronous operation or control. The baseband ICs (121a) (121b) are connected to the PCM switching network (1).
54), and is connected to the main control unit (155), and is connected to the transceivers (110a) and (110b) through connection terminals (154a).
(154b) Connected to perform interconnection of the minimum number of baseband signals or digital signals.

FIG. 6 is a block diagram showing another embodiment of the antenna control apparatus of the present invention. (100) is an antenna controller, (110a) and (110b) are digital system transceivers (in FIG. 6, as an example, a time division simultaneous transmission and reception system) constituting microcells, (111a) and (111)
b) is a transmitter, (112a) and (112b) are receivers,
(121a) and (121b) are baseband ICs, (12
2a) (122b) are synthesizers, (113a) (1
13b) is a control unit, (123) is a combiner, (124) is a splitter, (125) and (126) are band-pass filters,
(115) is a transmission output terminal, (116) is a reception input terminal, (31a) is a downstream coaxial cable, (32a)
Is the upward coaxial cable, (103a) and (103b)
Is a mobile terminal, (151) is a connection terminal of a common line control line, and (152) is a connection terminal for cascade connection. The transceivers (110a) and (110b) have, for example, two slots in time division. In the first slot, the receiver (112a) receives an upward high-frequency signal from the portable terminal (103a) and receives the base hand IC (12).
When the digital signal is detected and converted into a digital signal in 1a), the digital signal is directly modulated by the baseband IC (121b) of the transceiver (110b) and added to the transmitter (111b). And transmitted to the portable terminal (103b). On the other hand, in the first slot, a high frequency signal in the upward direction from the portable terminal (103b) is received by the receiver (112b) and the baseband IC (12
When the digital signal is detected in 1a) and converted into a digital signal, the digital signal is directly modulated by the baseband IC (121a) of the transceiver (110a) and added to the transmitter (111a). And transmitted to the portable terminal (103a). Time division is sender 1
If two slots and one slot on the receiving side are connected in cascade, bidirectional relay is possible. The synthesizers (122a) and (122b) transmit signals from the transmitters (111a) and (11a).
1b) and the frequencies of the receivers (112a) and (112b). A combiner (123) combines the outputs of the transmitters (111a) and (111b), and connects the combined output to a downstream coaxial cable (31a) via a band-pass filter (125). The high-frequency signal from the upstream coaxial cable (32a) is split by the splitter (124) via the band-pass filter (126), and connected to the receivers (112a) (112b).
Functions similar to those in the figure can be realized.

FIG. 7 is a block diagram showing another embodiment of the antenna control apparatus of the present invention. (100) is an antenna control device, (110a) and (110b) are digital type transceivers (in FIG. 7, as an example, a time-division simultaneous transmission / reception system) constituting microcells, (111a) (111)
b) is a transmitter, (112a) and (112b) are receivers,
(121a) and (121b) are baseband ICs, (12
2a) (122b) are synthesizers, (113a) (1
13b) is a control unit, (117) is a switch, (125)
(126) (129) is a band-pass filter, (11)
5) is a transmission output terminal, (116) is a reception input terminal, (3)
1a) is a downward coaxial cable, (32a) is an upward coaxial cable, (119) is an antenna connection terminal,
(109) is an outdoor antenna, (108) is an external base station, (103a) and (103b) are portable terminals, and (151)
Is a connection terminal of the common line control line, and (152) is a connection terminal for cascade connection. Transceiver (110a)
(110b) has, for example, two slots in time division. Mobile terminal (103a) in the first slot
The high frequency signal in the upward direction from the receiver is received by the receiver (112b), detected by the baseband IC (121b) and converted into a digital signal, and the digital signal is left as it is, the baseband IC (121a) of the transceiver (110a) , And is added to the transmitter (111a), converted into a high-frequency signal in the second slot, and transmitted to the external base station (109). On the other hand, in the first slot, the external base station (10
The high frequency signal in the down direction from 8) is received by the receiver (112a).
, And is detected by the baseband IC (121a) and converted into a digital signal.
Baseband IC (121b) for transceiver (110b)
, And is added to the transmitter (111b), and converted into a high-frequency signal in the second slot and transmitted to the portable terminal (103a). By connecting two cascaded units each having one slot on the transmission side and one slot on the reception side, bidirectional relay is possible. Synthesizer (122a) (122b)
Are transmitters (111a) (111b) and receivers (112)
a) For setting the frequency of (112b). The output of the transmitter (111b) is a band-pass filter (1
25) is connected to the downstream coaxial cable (31a), and the high frequency signal from the upstream coaxial cable (32a) is connected to (112b) via the band-pass filter (126). The transmitter (111a) and the receiver (112a) are switched by a switch (117) and pass through a band-pass filter (129) to the outdoor antenna (1).
09), and a function similar to that of FIG. 3 can be realized.

FIG. 8 is a diagram showing another embodiment of the antenna control apparatus of the present invention, in which (110a)-(110c)
Is a digital system that constitutes a microcell (in FIG. 8,
As an example, the transceiver is a time division multiplexing / time division simultaneous transmission / reception system and has a relay function between time division slots. (111a)-(111c) is a transmitter, (112)
a)-(112c) is a receiver, (121a)-(1
21c) is a base hand IC, (122a)-(12
2c) is a synthesizer, (113a) --- (113c)
Is a control unit, (115) is a downstream output terminal, (11)
6) is an input terminal in the upward direction, (117) is a switch,
(127) (128) is a selection switch for alternately switching between the indoor antenna and the outdoor antenna (109);
23) is a synthesizer, (124) is a branching device, (125) (1)
26) (129) is a band-pass filter, (115) is a downstream output terminal, (116) is an upstream input terminal, (31a) is a downstream coaxial cable, (32a)
Is an upstream coaxial cable, (108) is an external base station, (103a) and (103b) are portable terminals, and (151)
a) (151b) and (151c) are connection terminals of a common line control line, and (152a), (152b) and (152c) are PCs.
The connection terminal of the M highway, (155) is a main control unit. A combiner (123b) and a splitter (124b) are used to simultaneously connect a transceiver (110b) (110c) having means for selecting an indoor antenna and an outdoor antenna (109) to the outdoor antenna (109). , An amplifier (130) to compensate for the loss of the synthesizer (123b),
The amplifier (13) is used to compensate for the loss of the branching device (124b).
Use 1). On the other hand, since a relatively small transmission output is sufficient for the indoor antenna, the combiner (123) and the splitter (12)
4) Some loss is acceptable. In addition, by connecting a transceiver (110b) (110c) having means for selecting an indoor antenna and an outdoor antenna (109) to the indoor antenna unilaterally, the portable terminals (103a) (103)
It is also possible to operate as an extension connection during b) or as a control trunk. Transceiver (110a) (110
b) Control unit (113a) (113b) of (110c)
(113c) is a connection terminal (151) of the common line control line.
a) The main control unit (1) via (151b) and (151c)
55) and the transceivers (110a) (11
0b) The synchronous operation or control of (110c) is performed.
Baseband ICs for transceivers (110a) (110b) (110c) (121a) (121b) (121c)
Are PCM highway connection terminals (151a) (151)
b) connected to the main control unit (155) via (151c), and the transceivers (110a) (110b) (11)
0c) to provide the minimum interconnection of baseband or digital signals.

FIG. 9 is a block diagram showing another embodiment of the antenna control apparatus of the present invention. (110a) --- (11
0d) is a digital-type transceiver (in FIG. 9, as an example, a time-division multiplexing / time-division simultaneous transmission / reception method) and has a relay function between time-division slots. (111a)
--- (111d) is a transmitter, (112a)-(112
d) is a receiver, (121a)-(121d) is a baseband IC, (122a)-(122d) is a synthesizer, (113a)-(113d) is a control unit, and (11)
5) is a downstream output terminal, (116) is an upstream input terminal, (117) is a switch, and (127a) (127)
b) (128a) and (128b) are selection switches for alternately switching between an indoor antenna and an outdoor antenna (109), (123a) and (123b) are combiners, and (124a)
(124b) is a branching device, (125) (126) (12)
9) is a band pass filter, (115) is an output terminal in the down direction, (116) is an input terminal in the up direction, (31a)
Is a downstream coaxial cable, (32a) is an upstream coaxial cable, (108) is an external base station, (141a)
(141b) is a voice codec, (201) is a control trunk, (202) is a relay trunk, (203) is an internal trunk, and (204) is an external trunk. The transceiver (110a) forms a control trunk (201), synchronizes with a control channel of an external base station (107), and sends a broadcast signal to the extension side through the control channel,
Send and receive control signals. This notification signal can include information that regulates the transmission output of the mobile terminals (103a) and (103b). The transceiver (110b) forms a relay trunk (202), is synchronized with the control channel of the external base station (107), and is in a standby state. In this state, the switch (127) switches between the fifth and seventh slots, and the switch (128) switches between the first and third slots alternately. When the mobile terminal (103a) calls the external base station (107), the relay connection is performed by the relay function between the time division slots of the transceiver (110b) and the selection function of selecting the indoor antenna and the outdoor antenna (109). Do. The transceiver (110c) is connected to the extension trunk (20
3), and an extension connection between the portable terminals (103a) and (103b) is performed. The transceiver (110d) forms an external trunk (204), and a voice codec (141a).
(131b) is connected to the telephone line (106) via the line connection unit (114) and the connection terminal (104),
An external line connection is established between the portable terminal (103a) or (103b) and the telephone line. The trunk to which the transceiver is assigned is usually determined before installation. However, the transceiver can have a function of a plurality of trunks, and can be arbitrarily assigned according to the load state.

In the above description, the case where the transceiver of the antenna control apparatus is of the time division multiplexing / time division simultaneous transmission / reception system has been described. Even if a digital system such as a code division multiplexing / time division simultaneous transmission / reception system or a code division multiplexing / two frequency simultaneous transmission / reception system is used, a relay function such as between slots or between frames by time division or code division is used. Similar effects can be obtained. Also, a case has been described where relaying is performed using four of the eight slots in the time division. However, relaying may be performed using eight of the eight slots, or relaying may be performed according to any other number of slots. it can. Also, a case has been described in which two time-divided two-slot transceivers are used and cascade-connected and relayed at the stage of a baseband signal. However, a method such as frequency division or code division and an arbitrary number of slots are used. Corresponding relay can be performed. Further, the number of transceivers mounted on the antenna control device or the type of trunk to be allocated is not limited. By increasing the number of transceivers, the function of the antenna control device can be improved, the traffic capacity can be increased, and the number of channels per channel can be increased. Can greatly improve the traffic efficiency. Also,
Although the case where the amplifier is used on the outdoor antenna side has been described, the amplifier can be used on the indoor antenna side. Power can be supplied to each indoor antenna via a coaxial cable, and the indoor antenna can be controlled by switching the polarity of the supplied power or changing the voltage. Means for restricting or prohibiting transmission of a mobile phone having a normal transmission output may be limited by adding a restriction to a notification signal transmitted from a control channel of the system or may be applied to all control channels of a normal mobile phone system. A method of constantly transmitting a radio wave that interferes with the mobile phone so that the notification signal cannot be received or a method of limiting the transmission output of other mobile terminals can be applied.

[0173]

Since the present invention is configured as described above, an intercom connection between two portable terminals, an extension connection, or a connection between a portable terminal and an external base station without passing through an exchange or a telephone station. Relay connection, or external connection between the mobile terminal and the telephone line. Also, by incorporating an amplifier, branching device, etc. inside the indoor antenna, a relatively small transmission output is sufficient for both the antenna control device and the mobile terminal. A secure service area can be secured, and even in an environment where a large number of precise electronic equipment is used, such as a hospital, a portable terminal can be used without disturbing these devices.

[Brief description of the drawings]

FIG. 1 is a system diagram showing an embodiment of an antenna control device according to the present invention.

FIG. 2 is a system diagram showing another embodiment of the antenna control device of the present invention.

FIG. 3 is a configuration diagram showing an embodiment of the antenna control device of the present invention.

FIG. 4 is a configuration diagram showing an embodiment of a pond of the antenna control device of the present invention.

FIG. 5 is a configuration diagram showing another embodiment of the antenna control device of the present invention.

FIG. 6 is a configuration diagram showing another embodiment of the antenna control device of the present invention.

FIG. 7 is a configuration diagram showing another embodiment of the antenna control equipment of the present invention.

FIG. 8 is a configuration diagram showing another embodiment of the antenna control device of the present invention.

FIG. 9 is a configuration diagram showing another embodiment of the antenna control device of the present invention.

FIG. 10 is an example of a conventional base station.

[Explanation of symbols]

1a, 1b Distributed antenna device 2a, 2b Downstream amplifier 3a, 3b Upstream amplifier 4a, 4b Downstream brancher 5a, 5b Upstream brancher 6a, 6b Combiner 7a, 7b Antenna element 10a, 10b Branch Units 11a, 11b Branching devices 21a, 21b Downward input terminals 22a, 22b Upward output terminals 23a, 23b Downward output terminals 24a, 24b Upward input terminals 25a, 25b Input / output terminals 26a common to the downstream and upstream directions, 26b Input / output terminals 31a, 31b, 31c common in the down direction and the up direction Down coaxial cables 32a, 32b, 32c Up coaxial cables 33a, 33b, 33c Coaxial cables common in the down direction and the up direction 100 Antenna control device 101 Base station 102 Base station antenna 103a, 1 3b Mobile terminal 104 Switch 105 Line connection terminal 106 Telephone line or data line 107 Connection terminal to switch 108 External base station 109 Outdoor antenna 10, 110a, --110d Transceiver 111, 111a, --111d antenna of antenna control device Control device transmitter 112, 112a, --112d Antenna control device receiver 113, 113a, --113d Transceiver control unit 114 Line connection unit 115 Transmission output terminal 116 Reception input terminal 117 Transmission / reception antenna changeover switch 118 Upward direction And coaxial cable connection terminal 119 common to the downstream direction 119 Outdoor antenna connection terminal 121, 121a, --121d Baseband IC 122, 122a, --122d Synthesizer 123a, 123b Combiner 124a, 124b Branching device 25, 126 Bandpass filters 127a, 127b Changeover switches 128a, 128b Changeover switches 129 Bandpass filters 130, 131 Common amplifiers 141a, 141b Audio codecs 151, 151a, -151c Common line control lines 152, 152a, -152c PCM highway 153, 153a, 153b Bus line 154, 154a, 154b PCM switching network 201 Control trunk 202 Relay trunk 203 Extension trunk 204 External trunk

Claims (14)

[Claims] 1. A digital mobile radio system comprising a microcell, comprising: a plurality of transceivers for transmitting and receiving high-frequency signals from a plurality of portable terminals; and antenna means common to the transceivers. A single or a plurality of transceivers constitute a relay unit, and the relay unit relays at the stage of a baseband signal or a digital signal of the transceiver, and the high-frequency signal is transmitted via the relay unit and the antenna unit. Wherein the control signal contained in the antenna control device enables an extension connection between the portable terminals, a relay connection between the portable terminal and the external base station, or both. 2. A digital mobile radio system comprising a microcell, a plurality of transceivers for transmitting and receiving high-frequency signals from a plurality of portable terminals or external base stations, and a first common transceiver. And a second antenna unit, the transceiver unit selects between the first antenna unit and the second antenna unit, and a single or a plurality of the transceiver units constitute a relay unit, The relay unit is relayed at a stage of a baseband signal or a digital signal, and an extension connection between the mobile terminals or the mobile terminal is transmitted via the relay unit and the antenna unit by a control signal included in the high-frequency signal. Antenna control apparatus for enabling a relay connection between the mobile station and the external base station, or both. 3. The antenna control apparatus according to claim 1, wherein said relay means relays between time slots or between codes. 4. At least one of said transceivers has line connection means for connecting a telephone line or a data line, and converts a high-frequency signal from said portable terminal into voice or data to convert said telephone line or data. 3. The antenna control equipment according to claim 1, wherein connection is made to a data line. 5. At least one of said transceivers has a control means for transmitting and receiving a control signal through a control channel allocated to said mobile radio system and performing control based on said control signal. 3. The antenna control device according to claim 1, wherein the control unit controls the remaining transceivers. 6. A digital mobile radio system comprising a microcell, comprising: a plurality of transceivers for transmitting and receiving high-frequency signals from a plurality of portable terminals or an external base station; A control trunk for transmitting and receiving the control channel allocated to the system, an extension connection trunk for performing return looping between the mobile terminals via the antenna means, and the mobile terminal via the antenna means; Claims characterized by being arbitrarily assigned to a trunk group such as a relay connection trunk for relaying between said external base station and an external line trunk for connecting to a telephone line, or being assigned in advance. Item 3. An antenna control device according to item 1 or 2. 7. The high-frequency transmission means for individually connecting a down-stream high-frequency signal from the transceiver and an up-stream high-frequency signal to the transceiver, and the down-stream high-frequency signal comprises: Amplifying means for individually amplifying the upward high-frequency signal; first branch means for branching the upward high-frequency signal and the downward high-frequency signal to at least two or more output terminals; An antenna element is individually connected to each output terminal of the first branching means, or a second branching means is connected to each output terminal of the first branching means, so that the antenna element is common in the ascending and descending directions. The antenna control device according to claim 1 or 2, wherein the antenna control device is connected to the antenna control device. 8. The antenna means, wherein the high-frequency signal in the down direction from the transceiver and the high-frequency signal in the up direction to the transceiver are connected by common high-frequency transmission means, and branched by the first branch means. A fourth branching means is connected to the other output terminal, and a common high-frequency transmission means is connected to an output terminal of the fourth branching means in an upward direction and a downward direction. Item 3. An antenna control device according to item 1 or 2. 9. A branching or combining means for connecting said transceiver to said antenna means, comprising an amplifying means for compensating for a loss caused by said branching or combining means. Item or the antenna control device according to item 2. 10. The plurality of transceivers have individual control units, and the control units transmit and receive control signals to and from each other.
3. The antenna control device according to claim 1, wherein the antenna control device is connected by means such as a common data network or a bus line. 11. A transmitter / receiver having an IC for processing a baseband signal. Since the baseband ICs mutually transmit and receive a baseband signal or an audio digital signal, a common data highway or the like is provided. Claim 1 characterized by being connected by means
Item or the antenna control device according to item 2. 12. A control unit of said plurality of transceivers and / or a baseband IC or both are connected to a common control means, and control of synchronous operation between said transceivers, assignment to trunk groups, incoming and outgoing calls, or 12. The antenna control device according to claim 10, wherein switching control of a baseband signal or a digital signal is performed. 13. A control signal transmitted from said transceiver, wherein transmission output from a portable terminal present in the vicinity of said antenna means is limited to a value which does not interfere with other devices, or the transmission itself is controlled. 3. The antenna control device according to claim 1, further comprising control means for restricting or prohibiting the antenna control. 14. A monitor for sequentially monitoring frequencies assigned to portable terminals located in the vicinity of the system, and when it is determined that the transmission output from the portable terminal is excessive, the portable terminal of the portable terminal is monitored. 8. The antenna control apparatus according to claim 1, wherein the antenna control apparatus has a function of limiting transmission output or stopping transmission.